Portable telephone



FIG. 1 is a perspective view of a portable telephone, when closed, according to our new design;

FIG. 2 is a front view thereof, when closed;

FIG. 3 is a rear view thereof, when closed;

FIG. 4 is a left side view thereof, when closed;

FIG. 5 is a right side view thereof, when closed;

FIG. 6 is a top view thereof, when closed; and,

FIG. 7 is a bottom view thereof, when closed. 

We claim the ornamental design for a portable telephone, as shown and described. 